液态双酚F型环氧树脂在堵水中的作用探讨

针对目前环氧树脂在油井堵漏中应用受限的状况,探讨了双酚F型环氧树脂在堵水中的作用.考察了温度和稀释剂对树脂黏度的影响,并对树脂的固化时间,树脂固化体的强度、溶解性和收缩率以及选择性堵水等进行了评价.结果表明,双酚F型环氧树脂溶液适用于中高温井下条件,适宜的稀释剂为无水乙醇和苯甲醇(体积比1:2)的复配稀释剂.加入自制的...

Function of Bisphenol F-type Epoxy Resin Solution in Water Plugging

For the case of restricted application of epoxy resin in oil - well plugging, we explore bisphenol F - type epoxy resin in the role of water plugging. We investigate the effects of temperature and diluting agent on the viscosity of the resin. We evaluate curing time of the resin, the strength, solubility, shrinkage rate, and selective water plugging of the solidified body. The results show that Bisphenol F - type epoxy resin solution is suitable for underground medium - and high -temperature conditions and the optimum composited diluting agents are absolute ethanol and benzyl alcohol at volume ratio of 1：2. By adding self - made curing agent WLTP, the curing time is adjustable within a wide range from 30 minutes to 25 hours and the solidified body has the curing strength of more than 5 MPa and satisfies the sealing requirements. Bisphenol F - type epoxy resin has very low dissolution rate in water and oil and it has very low cro - silica powder. It has low permeability rate and shrinkage rate by adding active misealing effect is good. By adding self - made pore - forming agent WXB - 1, bisphenol F - type epoxy resin can be translated into selective water plugging agent, which expands the application scope of resins in oil -well plugging.